commit a0bb715977c98f6d9d3be1a25e8293232504a6b9
author Devang Patel <dpatel@apple.com> Tue Mar 16 21:02:07 2010 +0000
committer Devang Patel <dpatel@apple.com> Tue Mar 16 21:02:07 2010 +0000
tree b296ba24a6bd14897e2c3065fc1a40f3fc787abc
parent a71b9d067884a97962027815c0a0bc4976d1256e

Ignore debug value instructions while analyzing BB for tail duplication.

llvm-svn: 98675

llvm/lib/CodeGen/TailDuplication.cpp

diff --git a/llvm/lib/CodeGen/TailDuplication.cpp b/llvm/lib/CodeGen/TailDuplication.cpp
index fa3785d..aa6e2b4 100644
--- a/llvm/lib/CodeGen/TailDuplication.cpp
+++ b/llvm/lib/CodeGen/TailDuplication.cpp
@@ -495,7 +495,7 @@
     if (InstrCount == MaxDuplicateCount) return false;
     // Remember if we saw a call.
     if (I->getDesc().isCall()) HasCall = true;
-    if (!I->isPHI())
+    if (!I->isPHI() && !I->isDebugValue())
       InstrCount += 1;
   }
   // Heuristically, don't tail-duplicate calls if it would expand code size,